What does error 21920270 "Item Specific(s) from the product were used instead of...custom..." mean?

[gandalf_19]

On "ReviceFixedPriceItem" i regularly get an error message 21920270 that has the long text:

Item Specific(s) from the product were used instead of these custom Item Specific(s)...

What does that mean?

I do not get such an error on AddFixedPriceItem or RelistFixedPriceItem, only on ReviseFixedPriceItem.

What am i expected to do?

Usually, when issuing "ReviseFixedPriceItem", i create the exact same description and parameter block with the few changed elements being generated inline exactly the same way as if i would issue an AddFixedPriceItem Call (actually, i do generate the exact same parameters block with only the function name changed and the ItemID inserted). Is that something which i should do in another way? If so: How?

Mystically, the changes go through despite this error message. At the moment, i ignore that error, but i am not sure to do the right thing here. Does this have negative consequences for the offer?

[gandalf_19]

It looks like all Articles of mine nowadays have TWO (!) Attribut blocks on the ebay product page.

When i go to the item (ebay.de/itm/xxx...), normally (when i FIRST Add-some-Item) the product has ONE (!) Block of Attributes - below the "vehicle list" and above the "item description".

After ReviseItem or RelistItem, my products nowadays have TWO Blocks of Attributes between the "vehicle list" and the "item description": One labeled (german, sorry) "Artikelmerkmale" ("Article Attributes" in english, maybe). The other labeled (german, sorry) "Über dieses Produkt" ("About this product" in english, maybe).

Both showing the exact same datas, just the first a little more compact and nice than the latter.

By me, that's fine. Let them show three or four Attribute Blocks, if they like so!

But assume the case on WOULD like to have all except one of that redundant copies dumped into the bin... How WOULD one approach that golden goal? How should ReviseItem or RelistItem Calls be filled to avoid those idiotic redundancies?

[gandalf_19 · Accepted solution]

So, by default, an api call of addItem does NOT have Item.ProductListingDetails.IncludeeBayProductDetails set, but an api call of ReviseItem seams to have it.

Thus, for ReviseItem, i had to switch it off.

The effect of having it on is that ebay by itself decides out of thin air to switch some of the uploaded attributes for those out of its own catalogue. While i would principally appreciate such an approach in the interest of unification of factically identical offers, i just do not like the message's meaning of "switched those values for our own" when the values are in fact not identical.

Offers in the realm of car parts are often bundles of those car parts with accompanying tools or supplements, which may in fact be critically different in some details. Thus, when i put some very well by the producer defined attributes into the description, i really mean them to be that way. If eBay switches them against it's own - and different, because: why at all switch something when it's absolutely the same anyways? - values, the result may in fact be something other, which would lead the buyer to irritation about the offer.

Thus, i switched that behavior off.